[A83] Re: Color Calculators
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[A83] Re: Color Calculators
This is a grossly butchered version of the truth.
1) The email TI sent us was in regards to telling the world how to write
to the flash with no modifications to the current OS.
2) The circumvention requires no modification of any copyrighted
material. But does require the copying of _two bytes_ of "copyrighted"
data at a key location.
So, TI said we could go to hell if we told anyone how to circumvent the
flash protection but didn't say anything about making an OS that
validated properly.
--
Scott Dial
scott@scottdial.com
AIM GeekMug : ICQ# 3608935
-----Original Message-----
From: assembly-83-bounce@lists.ticalc.org
[mailto:assembly-83-bounce@lists.ticalc.org] On Behalf Of
robvanwijk@gmx.net
Sent: Thursday, December 05, 2002 8:25 AM
To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Color Calculators
>
> speaking of discoveries, how's the calcos hack progressing?
>
You could read the DS forum (slightly over 200 posts) at
http://www.detachedsolutions.com/forum/viewtopic.php?t=240&postdays=0&po
storder=asc&start=0. The
alternative
is reading the short version, two lines down ;)
Basically, the calc should only accept a new OS after the
verification of a digital signature, but Michael found a way
to make it load any OS.
There were two projects, one an entirely new OS, written
from scratch by Michael Vincent, the other was a hack, a
modified version of the real TI-OS. Somehow TI found out
about the latter and got a bit angry; their legal department
sent Michael a mail telling him to forget about it.
If Michael would release his OS, he'd have to tell the world
how to load it. After that, loading a "patched" OS would be
relatively easy. Even if Michael's "OS from scratch"-project
isn't illegal, patching an official (copyrighted) rom *is*. TI
won't let Michael release his (legal) OS, afraid that it would
trigger the release of illegal roms.
Long story even shorter: it's discontinued, probably forever.
Hope this shed some light,
Rob van Wijk
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